/Engine/Plugins/Runtime/Metasound/Source/MetasoundFrontend/Public/Interfaces/MetasoundFrontendInterfaceBindingRegistry.h
Registry of interface bindings, a way to characterize how MetaSound node instances that implement a give set of interfaces "bind" to other nodes that implement a second set set of interfaces. Binding is an abstracted way to connect two nodes together using multiple edges as defined through this registry. Accessing this registry is currently not thread safe and only expected to be occur on the Game Thread.
class IInterfaceBindingRegistry